Vehicle top sign holder



FIG. 1 is a front, left, top perspective view of the vehicle top sign holder showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a front elevation thereof;

FIG. 5 is a rear elevation thereof; and

FIG. 6 is a right side elevation thereof with the left side elevation being a mirror image thereof. 

The ornamental design for a vehicle top sign holder, as shown and described. 